Erythema multiforme (EM) is an acute and often recurrent syndrome characterized by the presence of typical skin lesions with or without mucosal involvement. EM has unknown incidence but is not rare, and is more common in adolescents and young adults [1]. EMmay be considered as a hypersensitivity reaction to several factors, including infections, drugs and internal diseases. Herpes simplex virus and mycoplasma pneumonia are the most common infectious causes in recurrent cases. Several infectious agents [...]